Matrix Solar Sensor Heating Issue

I had something similar happen with my Matrix. Check the connections to the sensor itself. Where is the sensor located?

Thanks for the reply. Do you remember exactly what the symptoms were in your case? And what exactly do you mean by the sensor connections?

Yes, the heating was not performing well, just like you described. The sensor connection behind the dashboard was loose. Considering your skills, you may want to ask a workshop to take a look.

Thanks, I'll check the connections. Looks like it's going to cost me around 95€ to fix at the shop. I appreciate the help!